Aetna CEO: Obamacare In A 'Death Spiral' Heading Into 2018. Aetna and Humana have called off their deal amid government concerns over competition. Here's a look back at six pivotal moments that led to this. Aetna and Humana have called off their deal amid government concerns over competition.
For the plant genus, see Synapsis (plant). Synapsis (also called syndesis) is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis.
The synapse is the membrane on the nerve of the presynaptic terminal. The synapse is the space between the presynaptic neuron and the postsynaptic neuron. Synapse is a term used to define the total transmission of the impulse from the presynaptic neuron to the postsynaptic neuron.